Bulletin of the American Physical Society
52nd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 66, Number 6
Monday–Friday, May 31–June 4 2021; Virtual; Time Zone: Central Daylight Time, USA
Session 1A: Graduate Student Symposium: AMO Platforms for Quantum Simulation and InformationLive Special Event
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Chair: Gupta Subhadeep, Univ of Washington; Kaden Hazzard, Rice Univ |
Monday, May 31, 2021 8:55AM - 9:00AM |
1A.00001: Welcome and Overview (8:55am-9:00am)
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Monday, May 31, 2021 9:00AM - 10:15AM Live |
1A.00002: Quantum gas microscopy of ultracold fermions in optical lattices Invited Speaker: Waseem S Bakr Ultracold atoms in optical lattices are a flexible platform for controlled engineering of quantum many-body systems. Quantum gas microscopes have enabled probing and controlling these systems at the level of individual atoms and lattice sites. In this talk, I will review progress from the last few years in fermionic microscope experiments studying the Fermi-Hubbard model. I will introduce the basic techniques used and review scientific highlights including: observation of Mott insulators and antiferromagnets, measurement of spin and charge correlations, and transport and photoemission spectroscopy experiments. I will conclude with an outlook on reaching lower entropy states of the Fermi-Hubbard model and novel approaches to realizing extended Hubbard models. |
Monday, May 31, 2021 10:15AM - 10:25AM |
1A.00003: Break (10:15am-10:25am)
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Monday, May 31, 2021 10:25AM - 11:40AM Live |
1A.00004: Advances in Quantum Simulation with Planar Ion Crystals Invited Speaker: Ana Maria Rey One of the most important goals of modern quantum sciences is to learn how to control and entangle many-body systems and use them to make powerful and improved quantum devices, materials and technologies. In this tutorial I will summarize recent progress on the use of a planar crystal arrays in the NIST Penning trap, made with tens to a few hundred ions, as a platform for quantum simulation of spin and spin-boson models. In this system a pair of lasers can be used to couple the spins, encoded in two internal levels of the ions, to the vibrational modes (phonons) of the crystal and generate entanglement starting from easily prepared uncorrelated states. The quantum simulator can operate in two regimes. In one regime, phonons do not play an active role in the dynamics and instead are used to mediate spin-spin interactions. I will discuss how operating in this regime we have been able to simulate Ising models with tunable-range spin couplings, the well know One-Axis-Twisting model, which we used to generate spin squeezing, and more recently, a many-body echo sequence which we used to measure out-of-time-order correlations (OTOCs), a type of correlations that quantify the scrambling of quantum information across the system's many-body degrees of freedom. In the other regime, phonons actively participate. I will describe how by operating in this regime we have been able to simulate the Dicke model, an iconic model in quantum optics which describes the coupling of a (large) spin to an oscillator and more recently realize a many-body quantum-enhanced sensor that can detect weak displacements and electric fields with at the least one order of magnitude better sensitivity than state-of-the-art Rydberg atom electric field sensors operated with classical particles. This capability opens a path for the use of trapped ion crystals for dark matter searches. |
Monday, May 31, 2021 11:40AM - 11:50AM |
1A.00005: Break (11:40am-11:50am)
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Monday, May 31, 2021 11:50AM - 1:05PM Live |
1A.00006: Artificial Photonic Materials in Circuit QED Invited Speaker: Alicia Kollar After two decades of development, superconducting circuits have emerged as a rich platform for quantum computation and simulation. Here I will describe some of the techniques that have emerged for building synthetic photonic materials from these quantum circuits with a focus on lattices of 2D waveguide resonators. I will highlight some of the unique capabilities of these systems, including the ability to realize lattices that exist in an effective curved space with negative, hyperbolic, curvature, as well as the ability to realize lattices with gapped flat bands. |
Monday, May 31, 2021 1:05PM - 1:15PM |
1A.00007: Break (1:05pm-1:15pm) Break (1:05pm-1:15pm) |
Monday, May 31, 2021 1:15PM - 2:30PM Live |
1A.00008: Quantum simulation with arrays of individual atoms Invited Speaker: Antoine Browaeys This talk will present how individual atoms trapped in tweezer arrays and excited to Rydberg states can be used to perform quantum simulations of many-body Hamiltonians. This system naturally implements various spin models, such as the XY or quantum Ising ones commonly studied in condensed matter physics. The talk will first describe the trapping of individual atoms in arrays of tweezers. It will then discuss several recent experiments simulating quantum magnetism, including in out-of-equilibrium situations, or implementing topological situations with this platform. |
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